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41. Re: [Amps] construct ferrite "line isolator" (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 27 Oct 2010 10:17:15 -0700; On the show floor, it is often easy to spot them with a visual inspection. What you're looking for is a shield connection that goes directly to the shielding enclosure. If it does NOT, but goes to th; /archives//html/Amps/2010-10/msg00415.html (11,841 bytes)
42. Re: [Amps] construct ferrite "line isolator" (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 27 Oct 2010 10:26:33 -0700; Yes. BUT -- when distributors talk about "good" it's sometimes hard to know what "good" means to THEM. Are they talking about use as inductors or as suppressors? And what Ward has said here ties in w; /archives//html/Amps/2010-10/msg00416.html (10,045 bytes)
43. Re: [Amps] construct ferrite "line isolator" (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 27 Oct 2010 10:45:54 -0700; Ah, but it's MUCH MORE than that. It is the improper termination of a cable SHIELD, NOT a GROUND connection. The EARTH has little to do with this problem. A rig running on a battery supply, with no c; /archives//html/Amps/2010-10/msg00417.html (11,635 bytes)
44. Re: [Amps] construct ferrite "line isolator" (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 27 Oct 2010 10:59:02 -0700; I forgot to mention that it is also often possible to find Pin 1 Problems in an active demo with a 2M and 440 talkie. I use a Kenwood TH-F6A. I key the radio off and on, moving it along the interconn; /archives//html/Amps/2010-10/msg00418.html (10,989 bytes)
45. Re: [Amps] construct ferrite "line isolator" (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Wed, 27 Oct 2010 13:39:29 -0500; Jim and Jim, thanks for your answers. Yes, I suspected most rigs built for hams probably had the Pin 1 problem. Ian, "Pin 1" may not mean anything initially but once you read about it, it does. The "; /archives//html/Amps/2010-10/msg00419.html (8,523 bytes)
46. Re: [Amps] construct ferrite "line isolator" (score: 1): Author: "Bill, W6WRT" <dezrat1242@yahoo.com>; Date: Thu, 28 Oct 2010 03:24:23 -0700; ORIGINAL MESSAGE: REPLY: Do you actually use ferrites in resonant circuits at HF or VHF where low loss is required such as pi-net output tanks? I always thought for efficiency ferrites were pretty mu; /archives//html/Amps/2010-10/msg00422.html (10,005 bytes)
47. Re: [Amps] construct ferrite "line isolator" (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Thu, 28 Oct 2010 04:41:52 -0700; When you wind a choke or transformer on Fair-Rite #61 or #67, you are depending on that core having low loss. How many times must I recommend that you STUDY THE FAIR-RITE CATALOG and STUDY MY TUTORIA; /archives//html/Amps/2010-10/msg00423.html (10,399 bytes)

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